Chapter 8 Review

A generator increases or decreases the voltage of an alternating current.

• True

• False

A turbine is a large wheel that rotates when pushed by water, wind, or steam.

• True

• False

Electric current can be measured using a galvanometer.

• True

• False

Tags

NGSS.HS-PS2-5

A magnetic field can be represented by lines of force called magnetic field lines.

• True

• False

Tags

NGSS.MS-PS2-5

The properties and interaction of magnets are referred to as fluid dynamics.

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Every magnet has three poles.

• True

• False

The strength of magnetic force in an electromagnet is ____ by increasing the current through the coil.

• decreased

• increased

• unaffected

• eliminated

Tags

NGSS.MS-PS2-3

A(n) ____ is a temporary magnet made by wrapping a wire around an iron core.

• plasma

• field line

• pole

• electromagnet

Tags

NGSS.MS-PS2-5

The atoms in a magnet are ____.

• arranged randomly

• aligned according to their magnetic poles

• positively charged

• negatively charged

The function of an electric motor is to ____.

• change electrical energy to chemical energy

• change chemical energy to electrical energy

• change mechanical energy to electrical energy

• change electrical energy to mechanical energy